Electric bell



G. W. OONOVER.

ELECTRIC BELL.

PIE. 5.

(No Model.)

WINVENTEIR ATTDRNEY wmflb 9 y WITNESEEE mm M UNITED STATES PATENT OFFICE.

GEORGE W. CONOVER, OF CHICAGO, ILLINOIS.

ELECTRIC BELL.

SPECIFICATION forming part of Letters Patent No. 480,319, dated August 9, 1892.

Application filed October 31, 1891. Serial No. 410,550- (No model.)

T0 at whom it may concern.-

Be it known that I, GEORGE W. OoNovnR, a citizen of the United States, residing at Ohicago, 1n the county of Cook and State of Illino1s,haveinvented a new and useful Improvement in Electric Bells or Buzzers, of which the following is a specification.

My invention relates to electric bells or buzzers and the like, and has for its object to provide a convenient and simple bell or buzzer in which the operating part shall be removable from the base. It is illustrated in the accompanying drawings, wherein Figure 1 is a plan view of the base and bell. Fig. 2 is a reverse View of the cover, and Fig. 3 is a cross-section through the bell.

Like parts are indicated in all the figures by the same letter.

A is a bell secured on the stem B by the screw 0. The stem B may be secured or may be cast upon the base E. The base E is provided with one or more screw-holes F F, wh ereby it may be secured upon the wall. It is preferably provided with the binding-posts G H. At one end it has a slot J and at the other the insulated projecting post K, which is separated by the insulation Lfrom the base E, but is secured thereto by the screw M.

N is a fiber cover having the inner metal plate 0 with the downwardly-proj ecting hook P at one end, adapted to engage the slot J, and at the other end the clamp R, having the two downwardly-depending spring-plates R R, between which the upwardly-projecting post K is adapted to be received. The part B is secured in position by a screw S and is insulated by the insulation S. T is an insulated conductor leading from contact with a screw N to contact with the insulated binding-post G, whence leads the conductor U.

From the part R leads the insulated conductor V to the magnet-spools V V, which are secured in position on a downwardly-depending flange V from the plate 0, and from them leads the insulated conductor V to the insulated stop V in the path of the spring V on the armature V, which carries the hammer V by means of the projecting rod V and which is cut by the magnet-spools V V.

My device could be greatly altered without departing from the spirit of the invention.

The entire cover could of course be made of metal instead of being of fiber, and the base could be of fiber instead of metal, the several parts being suitably and properlyinsulated or associated to accomplish the necessary result. It would also be equally convenient to carry the bell upon a removable case or cover, if preferred. The form of contact and methods of connect-i no: the two parts may easily be varied. The device is equally applicable to buzzers and the like.

The use and operation .of my invention are as follows: The base, preferably carrying the bell, binding-post, and projecting insulated post K, the engaging contact-point, is secured in proper position. The cover, carrying the operative portions of the bell,is then secured in position by inserting the hook P through the slot J and bringing the case or cover down into position, where the post K slides up between the depending spring portions R R of the contact R, whereupon the parts are relatively securely fastened together. There are two contact-points upon the baseonethe base itself and the other the insulated post K. These contacts respectively lead to thebinding-posts G and H, whence the conductors lead to the line which supplies the current. The case has also two contact-points-one the case itself, if the same is of conducting material, or the depending hook P, and the other the insulated spring-contact part B, adapted to engage the post K. \Vhen the two parts are brought into position together, these several contact-points or contacts are brought together, so that the circuit from the two binding-posts as terminals include the magnets or magnetic spools in the case and the current passes through the operating portions of the bell. When it is desired to repair the bell or adjust the same, it is only necessary to pull the case oif or outwardly with sufficient force to spring the contact R away from the post K, when the hookmay be released from the slot and the cover removed. The parts may then be adjusted or repaired and the case and operative portions be readily placed in position.

I claim- 1. The combination of a base with two contact-points thereon, with a cover containing the operative portions of the bell or buzzer and two contact-points thereon, and means for securing the cover to the base.

2. The combination of a base with circuitterminals and two contact-points, with a cover containing the operative portions of the bell or buzzer and two contact-points thereon, and means for securing the cover on the base so that the contact-points all engage and the operative portions are brought in circuit with the terminals.

3, The combination of a base with contactpoints thereon, and a cover con tainingthe opperative portions of the hell or buzzer, with opposite contact-points, one set of contactpoints consisting of a spring-clamp and a part to be received thereby.

4. The combination of abase with contactpoints thereon, and a cover containing the operative portions of the bell orbuzzer, with 0pposite contact-points, one set of contacts consistingof a hook and an en gagingpart therefor.

GEORGE Vt. OONOVER.

Witnesses:

CELESTE P. CHAPMAN, WALTER J. GUNTHORP. 

